Can you think of any three-dimensional shape that comprises of exactly two surfaces?

I want to fill my bucket using both cold and hot water.
I have two taps for both cold and hot water. The hot water tap fills the bucket in exact 6 hours and the cold water tap fills the bucket in exact 4 hours.
I turn both of them simultaneously but I forgot to turn off another tap which removes the water out of the bucket. This tap can empty the bucket in 12 hours.

How Long will it take to fill the bucket?

Things are just as they seem, right? Well, check again.
Can you count the number of tigers in this picture ?

Double it and multiply it by 4. Then divide it by 8 and you’ll have it once more. What number is it?

In the picture given below, can you find out which digit will take place of the question mark?

A very interesting trivia question for all.

Why do men's shirts have their buttons on the right side and women's have buttons on the left-hand side?

A red house is made out of red bricks. A yellow house is made out of yellow bricks. And, a blue house is made out of blue bricks. So, what is a greenhouse made of?

Two friends were betting. One said to the other, "The coin will be flipped twenty times and each time the coin lands on the head, I will give you $2 and each time it lands on the tale, you will give me $3." After flipping the coin twenty times not a single penny was exchanged among them.

How many times did the coin land on heads?

Can you make four (4) nines (9) equal 100?

It is raining today at 11:59 am. What is the probability of sunny weather after 72 hours?